Chauvin Arnoux AEMC Instruments MR417 User manual

AC/DC CURRENT PROBE MR417
MR527
ENGLISH User Manual

Copyright © Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments. All rights reserved.
No part of this documentation may be reproduced in any form or by any means (including electronic storage and retrieval or
translation into any other language) without prior agreement and written consent from Chauvin Arnoux®, Inc., as governed by
United States and International copyright laws.
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15 Faraday Drive • Dover, NH 03820 USA
Tel: [phone] or [phone] • Fax: [phone]
This documentation is provided “as is,” without warranty of any kind, express, implied, or otherwise. Chauvin Arnoux®, Inc. has
󰀨
the text, graphics, or other information contained in this documentation. Chauvin Arnoux®, Inc. shall not be liable for any damages,


advised of the possibility of such damages.

Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
certifies that this instrument has been calibrated using
standards and instruments traceable to international
standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be requested at
the time of purchase, or obtained by returning the
instrument to our repair and calibration facility, for
a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair and
calibration section at www.aemc.com.
Serial #: ________________________________
Catalog #: 1200.84 / 1200.85
Model #: MR417 / MR527
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com

TABLE OF CONTENTS
1. INTRODUCTION ......................................................................................5
1.1 PRECAUTIONS FOR USE .......................................................................... 6
1.2 RECEIVING YOUR SHIPMENT .................................................................. 7
2. DESCRIPTION..........................................................................................8
2.1 INTERFACE .................................................................................................. 9
2.1.1 MR417................................................................................................ 9
2.1.2 MR527.............................................................................................. 10
3. OPERATION ...........................................................................................11
3.1 BATTERY INSTALLATION......................................................................... 11
3.2 EXTERNAL POWER (OPTIONAL)............................................................ 11
3.3 TURNING THE INSTRUMENT ON ........................................................... 12
3.4 AUTO STANDBY......................................................................................... 12
3.5 DC ZERO ADJUSTMENT .......................................................................... 12
3.6 MEASUREMENTS ..................................................................................... 13
3.6.1 Making a Measurement.................................................................... 13
3.6.2 Converting to Current....................................................................... 13
4. SPECIFICATIONS..................................................................................14
4.1 REFERENCE CONDITIONS ..................................................................... 14
4.2 ELECTRICAL SPECIFICATIONS.............................................................. 14
...................................... 14
 ................................... 18
.................................... 20
 ................................. 24
4.3 OPERATING LIMITS.................................................................................. 26
4.4 VARIATIONS IN THE RANGE OF USE.................................................... 27
4.5 POWER SUPPLY ....................................................................................... 28
4.6 ENVIRONMENTAL CONDITIONS ............................................................ 28
4.7 MECHANICAL SPECIFICATIONS ............................................................ 29
4.7.1 Housing Protection........................................................................... 31
4.8 SAFETY SPECIFICATIONS ...................................................................... 31
5. MAINTENANCE......................................................................................32
5.1 CLEANING.................................................................................................. 32
5.2 BATTERY REPLACEMENT....................................................................... 32
5.3 REPAIR AND CALIBRATION..................................................................... 33
5.4 TECHNICAL AND SALES ASSISTANCE ................................................. 33
5.5 LIMITED WARRANTY................................................................................ 34
5.5.1 Warranty Repairs ............................................................................. 34

Current Probe MR417 & MR527 5
1. INTRODUCTION
Thank you for purchasing the Current Probe Model MR417 or MR527. For best
results from your instrument and for your safety, please read the following operating
instructions carefully and comply with the precautions for use.
This instrument is compliant with the IEC 61010-2-032 safety standards for voltages of
300V in measurement category IV or 600V in category III.
Symbols
WARNING, risk of DANGER! The operator must refer to these instructions
whenever this symbol appears.
Application or withdrawal authorized on conductors carrying dangerous

BS EN 61010-2-032
Equipment is protected by double insulation.
Battery.
USB.
Useful information or tip.
Direction of the current.
The instrument follows recycling directives.
The instrument complies with US directives.


Low-Voltage Safety, Electromagnetic Compatibility, and the Restriction of
Hazardous Substances.
Sorting for the recycling of electric and electronic waste.

CAT IV corresponds to measurements taken at the source of low-voltage installations.
Examples: power feeders, counters, and protection devices.
CAT III corresponds to measurements on building installations.
Examples:
CAT II corresponds to measurements taken on circuits directly connected to low-
voltage installations.
Examples: power supply to domestic electrical appliances and portable tools.

6 Current Probe MR417 & MR527
1.1 PRECAUTIONS FOR USE
These instructions are intended to ensure the safety of users and proper operation
of the instrument. Failure to observe these safety instructions may result in electric

 
understand the various precautions to take before and during use.
Do not use the instrument on networks on which the voltage or category

 
Observe the environmental conditions of use, including relative humidity,
altitude, degree of pollution, and place of use.
Do not use the instrument if it appears to be damaged, incomplete, or not
properly closed.
Before each use, check the condition of the insulation on the leads, housing,
and accessories. Any component on which the insulation is deteriorated (even
partially) must be set aside for repair or disposal.
 
Use suitable means of protection.
All troubleshooting and metrological checks must be performed by competent
and accredited personnel.

Current Probe MR417 & MR527 7
1.2 RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with the
packing list. Notify your distributor of any missing items. It the equipment appears

at once, giving a detailed description of any damage. Save the damaged packing
container to substantiate your claim.

................................................... 
Includes 9V battery, multi-language safety data sheet, and user manual
................................................... 
Includes 9V battery, multi-language safety data sheet, and user manual

Cable - 6ft USB type A to Micro type B................................................... Cat. #2138.66

8 Current Probe MR417 & MR527
2. DESCRIPTION
The Models MR417 and MR527 are clamp-on current probes that measure DC
currents up to 1400A, AC currents up to 1000A (1400A peak), and combined
 They
indicate the shape and amplitude of the current measured in the form of a voltage.
These instruments can be used with oscilloscopes. They can be powered by a
battery or with 5V via the optional micro-USB cable.
The MR417 and MR527 include the following features:
Range overage indicator
Power supply indicator
Zero adjustment
Auto Standby feature
 
Micro-USB connector to connect a power supply

Current Probe MR417 & MR527 9
2.1 INTERFACE
2.1.1 MR417
(MR417)
 
1 Fixed (non-mobile) jaw
2
3 Male BNC connector
4DC Zero button
5OL (overload) and ON indicators. ON is green when Auto Standby is
enabled and yellow when it is disabled.
6P(Permanent mode) indicator. Holding down the DC Zero button while
turning ON the instrument enables Permanent mode. In this mode, Auto
Standby is disabled (see §3.4).
7 3-position slide switch
8 USB port
9 Trigger
10 Hand guard
11 Mobile jaw
1
3
4
5
6
7
8
11

9
2

 Current Probe MR417 & MR527
2.1.2 MR527
(MR527)
 
1 Fixed (non-mobile) jaw
2
3 Male BNC connector
4DC Zero button
5OL (overload) and ON indicators. ON is green when Auto Standby is
enabled and yellow when it is disabled.
6P(Permanent mode) indicator. Holding down the DC Zero button while
turning ON the instrument enables Permanent mode. In this mode, Auto
Standby is disabled (see §3.4).
7 3-position slide switch
8 USB port
9 Trigger
10 Hand guard
11 Mobile jaw
1
3
4
5
6
7
8
11

9
2

Current Probe MR417 & MR527 11
3. OPERATION
3.1 BATTERY INSTALLATION
Before changing the battery, set the switch to OFF and remove the clamp
from the circuit being measured.
1. Using a screwdriver, remove the battery compartment cover (1) from the
back of the housing (see Figure 3).
2. Connect the battery to the snap-on connector (2), observing polarity.
3. Place the battery into the battery compartment (3).
4. Replace the battery compartment cover and screw it onto the housing.


For long-term measurements, you can connect the clamp to external power via any
micro-USB adapter that delivers 100mA or more. If external power is disconnected,
the clamp automatically switches to battery operation.
The insulation between the type B micro-USB connector and the measurement
output is 600V CAT III. This enables you to safely connect the clamp to measuring
instruments with uninsulated inputs. The type B micro-USB connector must not be in
contact with conductors or uninsulated parts at dangerous voltage.
When operating on external power, the Auto Standby feature is disabled. The color
of the ON indicator shows whether the automatic standby is enabled (green) or
disabled (yellow).

12 Current Probe MR417 & MR527
3.3 TURNING THE INSTRUMENT ON
To turn the clamp on, push the slide switch to the 1mV/A or setting:
MR417
1mV/A corresponds to the 600A range.
  corresponds to the 60A range.
MR527
1mV/A corresponds to the 1400A range.
  corresponds to the 150A range.
The green ON indicator should light up:
If the indicator blinks, less than 4 hours of battery life remains.
If the indicator does not light up, replace the battery (see §4.2).
3.4 AUTO STANDBY
After 10 minutes of operation without user action (such as pressing the DC Zero
button), the clamp automatically enters Standby mode. In this mode, the ON indicator
will turn OFF.
To reactivate the clamp, press the DC Zero button or change the switch to any
setting other than OFF.
To disable automatic Standby, press and hold down DC Zero when turning the
instrument ON. The ON indicator blinks to indicate that the request has been applied.
The ON indicator will show steady yellow after you release the DC Zero button.
3.5 DC ZERO ADJUSTMENT
The DC Zero must be adjusted before any series of measurements and after
each disconnection and reconnection.
To adjust the DC Zero:
With the clamp connected to the measuring instrument, select the desired
measurement range (or sensitivity) on the switch.
Make sure that there is no conductor in the clamp and that its jaws are closed
correctly.
Press the DC Zero button.
The OL indicator will light up for approximately three seconds to indicate that the
zero adjustment is in progress.
The OL󰀨
If the OL indicator stays on, the zero could not be adjusted.
Before repeating the operation, check that the jaws closed correctly (air gaps
clean, no dust, no oxidation, etc.) and that there is no conductor in the clamp.
Press the DC Zero button again.
 󰀨
the last adjustment of the DC Zero that is kept.



Current Probe MR417 & MR527 13
3.6 MEASUREMENTS

After adjusting the DC Zero:
1. Press the clamp trigger to open the jaws.
2. Clamp the jaws around the conductor to be measured. Use the centering marks
on the jaws to position the clamp around the conductor. If the measurement is
for a power calculation, ensure the arrow on the clamp jaws (see Figures 1 and

source load
3. Release the trigger, ensuring the jaws are completely and correctly closed.
4. Observe the measurements displayed on the measuring instrument.
5. If the OL indicator lights up, the current is too high to be measured. If the sliding
switch is set to the  range, change the setting to 1mV/A.
(MR527 shown)

The MR417 and MR527 both provide two measurement ranges. The MR417
measures current up to 600A with 1mV of output corresponding to 1A and measures
current up to 60A with 10mV corresponding to 1A. The MR527 measures current up
to 1400A with 1mV corresponding to 1A and measures current up to 150A with 10mV
corresponding to 1A.
To convert the clamp output to current, divide the voltage reading on the connected
󰀩
a reading of 100mV corresponds to a current of 100A.

14 Current Probe MR417 & MR527
4. SPECIFICATIONS
4.1 REFERENCE CONDITIONS
 
Temperature 73.4°F ± 9°F (23°C ± 5°C)
Relative humidity 20 to 75% RH
Position of the conductor Centered on the marks on the jaws
Measurement frequency DC to 65Hz sine wave
 Zero
 
 Zero
Input impedence 

󰀨
4.2 ELECTRICAL SPECIFICATIONS


MR417



 





Intrinsic
uncertainty    
MR527



 





Intrinsic
uncertainty    

MR417
  
Phase shift  
MR527
  
Phase shift  

Current Probe MR417 & MR527 15

MR417
MR527
Error (%)
Current (A)
Error (%)
Current (A)

16 Current Probe MR417 & MR527

MR417
MR527
-15
-10
-5
0
110 100 1000
Error (%)
Current (A)
-10
-5
0
110 100 1000 10000
Error (%)
Current (A)

Current Probe MR417 & MR527 17

MR417
MR527
Phase shift (°)
Current (A)
Current (A)
Phase shift (°)

18 Current Probe MR417 & MR527


Frequency    
Insertion
impedance   





MR417
MR527
Frequency (Hz)
Error (%)
Error (%)
Frequency (Hz)

Current Probe MR417 & MR527 19

MR417
MR527
-60°
-50°
-40°
-30°
-20°
-10°
0°
10 100 1000 10000 100000
Déphasage (°)
Phase shift (°)
Frequency (Hz)
-60°
-50°
-40°
-30°
-20°
-10°
0°
10 100 1000 10000 100000
Phase shift (°)
Frequency (Hz)

 Current Probe MR417 & MR527



peak-to-peak



MR417



  
Intrinsic uncertainty ± (3% R + 8mV) ± 1.5% R ± 1.5% R
MR527



  
Intrinsic uncertainty ± (3% R + 8mV) ± 1.5% R ± 1.5% R

MR417
  
Phase shift -3° -2.2°
MR527
 
Phase shift -2°